Buggy code:
public final class DistributedCacheonix extends AbstractCacheonix implements GroupEventSubscriber , MulticastMessageListener , Shutdownable { private static final Logger LOG = Logger . getLogger ( DistributedCacheonix . class ) ; private volatile boolean started = false ; private final ClusterProcessor clusterProcessor ; private TCPServer tcpServer = null ; private final ServerConfiguration serverConfig ; private final MessageSender messageSender ; private final ClusterNodeAddress address ; private final ReplicatedState replicatedState ; @ SuppressWarnings ( "unchecked" ) private final Map < String , CacheProcessor > cacheProcessorMap = new ConcurrentHashMap < String , CacheProcessor > ( 11 ) ; private final ReentrantLock reentrantLock = new ReentrantLock ( ) ; private final Condition cacheMapChanged = reentrantLock . newCondition ( ) ; private final Condition cacheProcessorMapChanged = reentrantLock . newCondition ( ) ; private final Router router ; private final MulticastSender multicastSender ; private final MulticastServer multicastServer ; public DistributedCacheonix ( final ServerConfiguration serverConfig ) throws IOException { } private static MulticastServer createMulticastServer ( final ServerConfiguration serverConfig ) { } private static MulticastSender createMulticastSender ( final ClusterNodeAddress localAddress , final ServerConfiguration serverConfig ) throws IOException { } private static ClusterNodeAddress createNodeAddress ( final ServerConfiguration serverConfig ) throws IOException { } protected void doStartup ( ) { } private void beginAutocreateCacheProcessor ( final Group group , final String cacheName , final PartitionedCacheConfiguration createAllTemplate ) { } private void createAndRegisterCacheProxy ( final String cacheName , final PartitionedCacheConfiguration cacheConfiguration ) { } private void postJoinGroupRequest ( final long desiredPartitionSize , final boolean partitionContributor , final int desiredReplicaCount , final String cacheName , final String cacheConfigName , final long desiredMaxElements ) { } final Cache createAndRegisterCache ( final String cacheName , final PartitionedCacheConfiguration cacheConfig , final boolean useConfigurationAsTemplate ) { } protected String getDescription ( ) { } private String getSummary ( ) { } protected final Map createCacheConfigMap ( final CacheonixConfiguration configuration ) { } protected Cache createWaitCache ( final String cacheName ) { } private static ClusterProcessor createClusterProcessor ( final Clock clock , final Timer timer , final Router router , final MulticastSender multicastSender , final ServerConfiguration serverConfig , final ClusterNodeAddress address , final UUID initialClusterUUID ) { } public void receive ( final Message message ) { } public void notifyClusterNodeJoined ( final ClusterNodeJoinedEvent event ) { } private void beginCreateCacheNode ( final String cacheName , final PartitionedCacheConfiguration cacheConfig ) { } public void notifyClusterNodeLeft ( final ClusterNodeLeftEvent event ) { } public void notifyClusterNodeBlocked ( ) { } public void notifyClusterNodeUnblocked ( ) { } public void notifyReset ( ) { } public void notifyGroupMemberJoined ( final GroupMemberJoinedEvent event ) { } public void notifyGroupMemberLeft ( final GroupMemberLeftEvent event ) { } public void notifyGroupMemberFailedToJoin ( final GroupMemberFailedToJoinEvent event ) { } public ClusterProcessor getClusterProcessor ( ) { } @ SuppressWarnings ( "ThrowableInstanceNeverThrown" ) public void shutdown ( final ShutdownMode shutdownMode , final boolean unregisterSingleton ) { } public final Cache createCache ( final String cacheName , final String templateName ) throws IllegalArgumentException { writeLock . lock ( ) ; try { if ( cacheExists ( cacheName ) ) { throw new IllegalArgumentException ( ( "Cache<seq2seq4repair_space>already<seq2seq4repair_space>exists:<seq2seq4repair_space>" + cacheName ) ) ; } final PartitionedCacheConfiguration cacheConfiguration = ( ( PartitionedCacheConfiguration ) ( cacheConfigMap . get ( cacheName ) ) ) ; if ( cacheConfiguration != null ) { return createAndRegisterCache ( cacheName , cacheConfiguration , false ) ; } final PartitionedCacheConfiguration defaultConfiguration = ( ( PartitionedCacheConfiguration ) ( cacheConfigMap . get ( templateName ) ) ) ; if ( defaultConfiguration == null ) { <START_BUG> throw new IllegalArgumentException ( ( "Cache<seq2seq4repair_space>configuration<seq2seq4repair_space>not<seq2seq4repair_space>found<seq2seq4repair_space>and<seq2seq4repair_space>default<seq2seq4repair_space>configuration<seq2seq4repair_space>template<seq2seq4repair_space>is<seq2seq4repair_space>not<seq2seq4repair_space>set:<seq2seq4repair_space>" + cacheName ) ) ; <END_BUG> } return createAndRegisterCache ( cacheName , defaultConfiguration , true ) ; } finally { writeLock . unlock ( ) ; } } private final class BucketEventDispatcher implements BucketEventListener { public void execute ( final BeginBucketTransferCommand command ) { } public void execute ( final FinishBucketTransferCommand command ) { } public void execute ( final CancelBucketTransferCommand command ) { } public void execute ( final RestoreBucketCommand command ) { } public void execute ( final OrphanBucketCommand command ) { } public void execute ( final AssignBucketCommand command ) { } } ClusterNodeAddress getAddress ( ) { } public Cluster getCluster ( ) { } public String toString ( ) { } }

Fix:
throw new IllegalArgumentException ( ( ( "Cannot<seq2seq4repair_space>create<seq2seq4repair_space>cache<seq2seq4repair_space>\"" + cacheName ) + "\":<seq2seq4repair_space>cache<seq2seq4repair_space>configuration<seq2seq4repair_space>not<seq2seq4repair_space>found<seq2seq4repair_space>and<seq2seq4repair_space>default<seq2seq4repair_space>configuration<seq2seq4repair_space>template<seq2seq4repair_space>is<seq2seq4repair_space>not<seq2seq4repair_space>set" ) ) ;